From: "R.B.Love" <rblove@...>
Date: 2007-02-04T01:40:05+09:00
Subject: Expect Module and Bash script

How do I use ruby expect to feed input to a simple bash script?  Here 
is a minimal example of what I'm trying to do.  All help appreciated.

First, the simple bash script.  When run from the command line it 
performs as I expect.

#!/bin/bash
echo "1) red"
echo "2) blue"
echo "3) green"
echo "#? "
read CHOICE
sleep 5
echo "$CHOICE is done"
exit 0


Now for the ruby script I want to work with the bash script

#!/usr/bin/env ruby

require 'expect'
require 'pty'

p = PTY.spawn('./simple') do |read,write,pid|
	write.sync = true
	read.sync = true
	$expect_verbose = true  # shows actions on screen
	
	read.expect("#? ") {write.puts "3"}
		
end

When ruby operates the bash script, I doesn't seem like the input is 
given to bash.

I've tried ruby 1.8.4 on OSX and ruby 1.8.5 on Fedora Core 6.